Sheet-Metal Formability Study on a Circular Tube with a Folding Bottom Feature

Yung Fu Hsieh; Huu That Nguyen; Tsung Hsien Lee; Quang Cherng Hsu

doi:10.4028/p-c9oe7r

Paper Titles

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Tool Wear of Cubic Boron Nitride in Cutting Sintered Steel
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Experimental Research on the Effect of the Rotary Friction Welding Process on Carbon Steel AISI 1030
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Sheet-Metal Formability Study on a Circular Tube with a Folding Bottom Feature
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In₂O₃/MoS₂/Reduced Graphene Oxide Nanostructure as Composite Electrodes for Supercapacitors
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Structural Morphological and Optical Investigations of Nano Silver Oxides Nanostructures
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Dielectric, AС Conductivity and Optical Characterizations of (PVA-PEG) Doped SrO Hybrid Nanocomposites
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Characterization of Zinc Oxide Semiconductor Thin Film Treated with Cold Plasma
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 936Sheet-Metal Formability Study on a Circular Tube...

Sheet-Metal Formability Study on a Circular Tube with a Folding Bottom Feature

Abstract:

The formability of sheet-metal with a folding-bottom circular hollow tube has been studied both by numerical simulation and experiment. A mesh-convergence analysis has been carried out to determine an optimum element size for purposes of numerical simulation. The geometry and dimension of the dies and of the punch are designed to simulate the multi-stage deep drawing operation to take place. During the deep drawing operation, the strains of the sheet blank are always located in the second quadrant of the forming limit diagrams, and it continuously moves in a linear state to the left side of the diagram. At the final stage, the tube is drawn to a certain height without evidence of fracture. In order to obtain a quality product, an optimization of input parameters for the deep drawing operation is conducted using Taguchi method. Finally, a validation test is also employed to demonstrate the accuracy of forming processes. The result reveals sufficient agreement in both geometry and dimension between simulated and actual tubes to meet a good quality standard.